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938256
Ultra High Purity Gas Regulators

Single Stage, Pressure Regulator - QR4000 & NPR4000 Series

The QR4000 is a high purity, high pressure non-tied diaphragm regulator. It utilizes a metal-to-metal diaphram seal which provides enhanced leak integrity.

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The QR4000 is a high purity, high pressure non-tied diaphragm regulator. It utilizes a metal-to-metal diaphram seal which provides enhanced leak integrity.

Use our configurator to build the right part for your application.

Description

The QR4000 is a high purity, high pressure non-tied diaphragm regulator. It utilizes a metal-to-metal diaphram seal which provides enhanced leak integrity. The NPR4000 regulator is for applications involving negative delivery pressures with low pressure gas sources. Typical applications include the delivery of low pressure gases from liquid sources such as WF6, BCL3. “VeriClean”, Veriflo’s custom low sulfur high purity 316L Stainless Steel™ enhances electropolishing, welding and corrosion resistance. Unique compression member loads the seal to the body without requiring a threaded nozzle or additional seals to atmosphere. Threadless internal nozzle assembly. Metal-to-metal diaphragm to body seal assures high leak integrity. Minimal particle generation and entrapment. Positive upward and downward diaphragm stops. Standard full internal electropolish.

Description

Performance Characteristics
Body Material 316L Stainless Steel
Compression Member Material Inconel 625
Diaphragm Material Hastelloy C-22
Pin Material Hastelloy C-22 (NPR4000 Only)
Poppet Material Hastelloy C-276
Poppet Spring Material Inconel X750
Filter Screen Material Hastelloy C-22
Seat Material PCTFE (std), PEEK, Vespel
Seat Retainer Material 316L Stainless Steel
Back-up Washer Material 316 Stainless Steel
Cap Material Nickel Plated Brass
Nut Material 316L Stainless Steel
Knob Material Aluminum, ABS (Black) (QR4000) ABS (White) (NPR4000)
Flow Capacity (Cv) Cv 0.06 (std), Cv 0.02, Cv 0.15
Internal Leak Rate <4 x 10-8 scc/sec He
External Leak Rate <2 x 10-10 scc/sec He
Supply Pressure Effect 0.23 psig/100 psig (0.16 barg/7 barg) (0.02 Cv) (QR4000) 0.6 [sig/100 psig (0.04 barg/7 barg) (0.06 Cv) (QR4000) 1.5 psig/100 psig (0.1 barg/7 barg) (0.15 Cv) (QR4000)
Internal Volume (cc) 4.0 cc without fittings
Weight (lbs) 1.5
Weight (kg) 0.7
Maximum Inlet Pressure (psi) 250 Cv 0.06, Cv 0.02, Cv 0.15 (NPR4000) 400 Cv 0.06, Cv 0.02, Cv 0.15 (QR4000) 1250 Cv 0.15 (QR4001, 4002, 4004, 4005) 4000 Cv 0.06, 0.02 (QR4001-4005, 4015) 4000 Cv 0.15 (QR4003, QR4015)
Outlet Pressure 1-10 psig (0.07 barg), 1-30 psig (2 barg),1-60 psig (4 barg), 2-100 psig (7 barg),3-250 psig (17 barg), 5-150 psig (10 barg),20-500 psig (35 barg) (QR4000)100 torr - 10 psig (-26 in Hg - 0.7 barg) 100 torr - 30 psig (-26 in Hg - 2 barg) 100 torr - 60 psig (-26 in Hg - 4 barg) (NPR4000)
Maximum Working Temperature (C) 66°C PCTFE, 135°C PEEK, 260°C Vespel
Maximum Working Temperature (F) 150°F PCTFE, 275°F PEEK, 500°F Vespel
Minimum Working Temperature (C) -40°C
Minimum Working Temperature (F) -40°F

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